34 Special senses Assignment

Papillae

"Bumps" of the tongue in which the taste buds are found

Each eyeball has extrinsic eye muscles attached to it that move the eyeball superiorly, inferiorly, laterally, or medially.

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Astigmatism

Abnormally shaped lens or unevenly curved cornea

Is a benign tumor of the vestibulocochlear nerve.

Acoustic neuroma

Which of the following is a type of hearing loss that occurs when sound waves cannot be directed through the ear? Most types are temporary.

Conductive deafness

are mucous membranes that line the inner surfaces of the eyelids and cover the anterior surface of the eyeball,

Conjunctivas

Which of the following are eye changes due to aging?

Corneal yellowing Drier conjunctiva Drooping eyelids

Is a condition caused by decreased oil production in the tears.

Dry eye syndrome

Ectropion

Eversion of the lower eyelid

Which structure initiates sound conduction?

External ear

Retina

Inner layer of the eye; it contains light-sensing nerve cells

Entropion

Inversion of the lower eyelid

Which of the following is the process in which light is bent by the cornea, lens, and eye fluids to focus light onto the retina?

Refraction

Which of the following is a disorder of the equilibrium characterized by vertigo, tinnitus, nausea, and progressive hearing loss?

Meniere's disease

Choroid

Middle layer of the eye, which contains the iris, the ciliary body, and most of the eye's blood vessels

Nystagmus

Rapid, involuntary eye movements

Which of the following are taste sensations detected by taste cells?

Salty Sour Sweet Spicy Bitter

Acoustic neuroma is due to a malfunction in the gene responsible for controlling the growth of

Schwann cells.

Hearing is more accurate.

The eardrum shrinks. Earlobes elongate.

Is abnormal ringing in the ear.

Tinnitus

Olfactory receptors are

chemoreceptors.

The ability of the lens to change shape, allowing the eye to focus images of objects that are near or far away, is called

accommodation.

The is a transparent area on the front of the eye that acts as a window to let light into the eye.

cornea

The outer layer of the eye is composed of the

cornea. sclera.

Cerumen is commonly known as

earwax

The opening in the middle ear, leading to the back of the throat, that helps equalize air pressure on both sides of the eardrum is the

eustachian tube.

The visual accessory organs that assist and protect the eyeball include the

eyebrows. orbits. lacrimal apparatus. conjunctiva.

The protects the eye from foreign objects, dust, and debris and keeps the eye from drying out.

eyelid

When there is an accumulation of aqueous humor, a person develops a visual condition known as

glaucoma.

The function of the vitreous humor is to

help maintain the eye's shape. keep the retina flat.

The conjunctivas produce which keep the surface of the eyeballs moist.

mucus

The medical term for the eye socket is

orbit.

The inner ear contains

the cochlea. semicircular cana vestibule.

Oval window

Beginning of the inner ear

Eustachian tube

Opening in the middle ear, leading to the back of the throat, that heips equalize air pressure on both sides of the eardrum

Organ of Corti

Organ of hearing located in the cochlea of the inner ear

often results from the spread of an upper respiratory infection from the throat into the eustachian tube,

Otitis media

Which of the following conditions is hearing loss due to old age?

Presbycusis

Conjunctiva

Protective membrane that lines the eyelid and covers the anterior of the sclera

Which of the following are eye changes due to aging?

Reduced accommodation Reduced depth perception

occurs when the neural tunic separates from the vascular tunic.

Retinal detachment

Which of the following conditions occurs when neural structures associated with the ear are damaged. Neural structures include hearing receptors and the auditory nerve?

Sensorineural deafness

Cochlea

Spiral-shaped canal in the inner ear that contains the hearing receptors

External auditory canal

Structure that carries sound waves to the tympanic membrane

Semicircular canals

Structures in the inner ear that help a person maintain balance

The causes of ectropion are

aging.

The function of the middle ear ossicles is to

amplify sound.

The anterior chamber of the eye is filled with a watery fluid called

aqueous humor.

The condition in which the cornea has an abnormal shape and causes blurred images during near or distant vision is

astigmatism.

When sound waves of different volumes and frequencies activate the hearing receptors in the cochlea, they send their information to nerves.

auditory

The external ear is composed of the

auricle. external auditory canal.

A sign or symptom of astigmatism is

blurred vision.

Sound waves are conducted through the bones of the skull by way of

bone conduction

The process by which sound waves pass through the bones of the skull directly to the inner ear, bypassing the outer and middle ears, is called

bone conduction.

Clouding and hardening of the lens, which often occur with aging, lead changes

cataracts.

Taste buds are made of taste cells and supporting cells. The taste cells are classified as

chemoreceptors.

The eye receives most of its nourishment from the blood vessels within the

choroid.

The hearing receptors of the ear are located in the

cochlea.

Cerumen impaction may be caused by

improper cleaning of the ear canal. overactive ceruminous glands.

The sensory receptors of the special senses are located

in the head,

If bone conduction is normal, a hearing problem likely involves the

inner ear. tympanic cavity.

The is the colored part of the eye, made of muscular tissue that contracts and relaxes, altering the size of the pupil.

iris

Common signs and symptoms of dry eye syndrome include

itching. burning. redness.

The visual accessory organs that assist and protect the eyeball include the

lacrimal apparatus conjunctiva. orbits. eyebrows.

Chemicals that activate olfactory receptors must be dissolved in the

mucus of the nose.

The nerve carries visual information from the eye to the brain.

optic

The muscle responsible for blink- ing and squinting. Blinking the eyelids prevents the mucous membrane surface of the eyeball from drying.

orbicularis oculi

The inner ear infections labyrinthitis is also known as

otitis interna.

Immobilization or hardening of the stapes is known as

otosclerosis.

The stapes is attached to the of the inner ear.

oval window

Clouding and hardening of the lens, which often occur with aging, lead to visual changes in a condition known as

presbyopia.

The factors that can lead to presbycusis include

prolonged exposure to loud noise. loss of hair cells in the cochlea.

The chemoreceptors of gustatory cells are activated by chemicals that must be dissolved in

saliva.

Umami produces a taste.

savory

The extrinsic eye muscles are composed of muscle.

skeletal

The largest sense organ

skin.

The largest sense organ is the

skin.

Signs and symptoms of retinal detachment include

sudden loss of vision. light flashes. wavy vision.

The separates the external ear from the middle ear.

tympanic membrane

Otosclerosis is often accompanied by

tìnnitus.

The round shape of the eyeball is maintained by the gel-like

vitreous humor.